chore: build and package

packages/leann/README.md

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+# LEANN - The smallest vector index in the world
+
+LEANN is a revolutionary vector database that democratizes personal AI. Transform your laptop into a powerful RAG system that can index and search through millions of documents while using **97% less storage** than traditional solutions **without accuracy loss**.
+
+## Installation
+
+```bash
+# Default installation (HNSW backend, recommended)
+uv pip install leann
+
+# With DiskANN backend (for large-scale deployments)
+uv pip install leann[diskann]
+```
+
+## Quick Start
+
+```python
+from leann import LeannBuilder, LeannSearcher, LeannChat
+
+# Build an index
+builder = LeannBuilder(backend_name="hnsw")
+builder.add_text("LEANN saves 97% storage compared to traditional vector databases.")
+builder.build_index("my_index.leann")
+
+# Search
+searcher = LeannSearcher("my_index.leann")
+results = searcher.search("storage savings", top_k=3)
+
+# Chat with your data
+chat = LeannChat("my_index.leann", llm_config={"type": "ollama", "model": "llama3.2:1b"})
+response = chat.ask("How much storage does LEANN save?")
+```
+
+## Documentation
+
+For full documentation, visit [https://leann.readthedocs.io](https://leann.readthedocs.io)
+
+## License
+
+MIT License